Bring the matter How many items can be exchanged for goods of each country. You have to determine the monetary value of each country. We can exchange goods more easily. The configuration of each country depending on domestic economic conditions. The country is a superpower, often with high rates, such as Europe, the developing countries need to revalue themselves to weaken. So that other countries want to come to trade with. This is the beginning of a soft money and hard money.
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